Question

EXERCISE 5 ABO BLOOD GROUP Work in a small group or alone to complete this exercise. Review Figure 8.6 (on p. 235). Use this information, as well as your understanding of the forces of evolution, to answer the following questions. 1. Many populations throughout central Eurasia share high frequencies of the B allele. What does this pattern suggest about the evolutionary history of these populations? Describe the evolutionary force that probably caused this trait distribution. 2. The 0 allele is unusually frequent in the Americas. What does this pattern suggest about the evolutionary history of these populations? Describe the evolutionary force that probably caused this trait distribution RE

Answer 1

Evaluationary history of the allele have the Allele frequency refers to how common an allele is in a population. It is determined by counting how many times the allele appears in the population then dividing by the total number of copies of the gene. The gene pool of a population consists of all the copies of all the genes in that population.

The relative genotype frequencies show the distribution of genetic variation in a population. Relative allele frequency is the percentage of all copies of a certain gene in a population that carry a specific allele. This is an accurate measurement of the amount of genetic variation in a population.